Kde: Add sddm theme

kde/sddm/components/KeyboardLayoutButton.qml

@@ -0,0 +1,29 @@
+import QtQuick 2.1
+import QtQuick.Controls 1.1 as QQC
+
+import org.kde.plasma.components 2.0 as PlasmaComponents
+
+import org.kde.plasma.workspace.keyboardlayout 1.0
+
+PlasmaComponents.ToolButton {
+    id: kbLayoutButton
+
+    iconName: "input-keyboard"
+    implicitWidth: minimumWidth
+    text: layout.currentLayoutDisplayName
+
+    Accessible.name: i18ndc("plasma_lookandfeel_org.kde.lookandfeel", "Button to change keyboard layout", "Switch layout")
+
+    visible: layout.layouts.length > 1
+
+    onClicked: layout.nextLayout()
+
+    KeyboardLayout {
+          id: layout
+              function nextLayout() {
+              var layouts = layout.layouts;
+              var index = (layouts.indexOf(layout.currentLayout)+1) % layouts.length;
+              layout.currentLayout = layouts[index];
+          }
+    }
+}